MC68HC08XL36 Datasheet, PDF (108/362 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

DMA
Freescale Semiconductor, Inc.
Introduction
The DMA can perform data transfers to and from any two CPU-addres-
sable locations without CPU intervention.
Features
Features of the DMA include the following:
• Modular Architecture
• Service Request-Driven Operation without CPU Intervention
• Three Independent Channels
• Byte or Word Transfer Capability
• Block Transfers and Loop Transfers
• CPU Interrupt Capability on Completion of Block Transfer or on
Loop Restart
• Programmable DMA Bus Bandwidth (25%, 50%, 67%, or 100% of
Total Bus Bandwidth)
• Programmable DMA Service Request/CPU Interrupt Request
Priority
• Programmable DMA Enable during Wait Mode
• Block Transfers Up to 256 Bytes
• Expandable Architecture Up to Seven Channels and Eight
Transfer Source Inputs
MC68HC08XL36
108
Direct Memory Access Module (DMA)
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Go to: www.freescale.com
2-dma_b
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